Does a profile site like AirBnB use something like Multisite?

I hope I’m asking this in the right place and apologies if not.

I have an industry-specific concept for a platform where users can create their own profiles/websites. There are so many of them out there these days, but big names would be like AirBnB, GoodDog (for breeders), or real estate sites. Something where users can log in to their own admin and create their profile/sites based on an established template, but they can customize with their own color scheme, upload their own images, fill-in-the-blank content, etc..

Before I start finding developers, I’m first trying to figure out what open-source codebase would be used to create something like this? WPMultisite? A membership site? Or something like a Drupal or Joomla backend? Just trying to wrap my head around the big picture before looking for experts to help it come to reality.`